Of you're bothering someone it's not because you're confident, it's because you're socially inept.
I say this as someone who was very socially inept for a long time, and today I'd say I'm just not as socially "ept" as some people I admire or as I'd like to be.
Socially "ept" people are first interested in others, not in their own ideas or goals first. Or at least they're damn good at focusing on the needs of others first. I've worked for some people who are incredible at this. Some actually care about other people, others are good at giving people what they need, to get what they want, yet you still walk away feeling good. (That's a very interesting experience).
(Is "ept" a word? I haven't looked up the etymology of "inept" yet).
I think you are meaning "confident that this will go your way" when it should be "confident that your mood and well-being are going to be fine no matter how it goes".
The second one takes the anxiety out and let's you respond to how things actually are, instead of comparing to some other story. Then you can see yourself, the situation, and the other person more clearly, which helps make experience more worthwhile in any event.
Confidence: having faith or belief in oneself and/or abilities
So, being confident during dating is just knowing you have what it takes to make it. Nothing about that is "bothering people", at least it shouldn't. Know what your character and abilities are and do your best with the rest. Dating is about learning what you're into and what they are into as well. Ask them questions that you'd like them to know about you as well, so you both learn. Date at places that are neutral and there isn't a ton of pressure. You don't have to be arrogant or loud, just know your worth and what you're good at.
You can do it. It sometimes feels like a lot, but you got this.